CN104624906B - A kind of forging mold and forging method - Google Patents
A kind of forging mold and forging method Download PDFInfo
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- CN104624906B CN104624906B CN201510044654.9A CN201510044654A CN104624906B CN 104624906 B CN104624906 B CN 104624906B CN 201510044654 A CN201510044654 A CN 201510044654A CN 104624906 B CN104624906 B CN 104624906B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/04—Shaping in the rough solely by forging or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention provides a kind of forging mold, and including the upper die and lower die being mutually matched, lower mold has drag chamber, and the sidewall pattern draft of lower mold die cavity is 0 ° ~ 3 °, and the recessed fillet of lower mold cavity bottom is R50mm ~ R100mm；Upper mold has upper mold die cavity and boss, and the sidewall pattern draft of upper model cavity is 0.5 ° ~ 3 °, and the dome angle of boss bottom is R80mm ~ R150mm, and the gradient of boss bottom is 10 ° ~ 15 °.The present invention also provides for a kind of forging method using this forging mold.The forging mold of the present invention has less pattern draft, the forging surplus produced is little, the utilization rate that can be effectively improved material, the integrity ensureing the metal streamline of forging and the organization mechanics performance of lifting forging, pressure required during forging is the least, is effectively shortened the forging cycle of forging.The forging method of the present invention, it is possible to produce large deep cylinder swaged forging part on the forging equipment that pressure is less conveniently and efficiently.
Description
Technical field
The invention belongs to technical field of forging, be specifically related to a kind of forging mold and forging method.
Background technology
In the prior art, the forging of large deep cylinder swaged forging part generally uses open die forging mode or tradition die forging mode raw
Produce.But, using the forging that open die forging mode produces, stock utilization is low, and heat treatment quenching degree is poor, and metal streamline is cut substantially
Disconnected, organization mechanics performance and uniformity can not be guaranteed.Tradition die forging mode includes the operations such as upsetting cake, punching, die forging, uses and passes
The system forging that produces of die forging mode is owing to must there be punching core material, and owing to forging inside and outside wall all has bigger pattern draft,
Forging surplus is big, therefore there is also the problem that stock utilization is the highest；Additionally, machine add during forging metal streamline also can be by
Cutting off, processing technique is relatively complicated, and production efficiency is the highest, and when the sidewall of forging exists bigger pattern draft simultaneously, metal exists
Flow resistance in forging die cavity increases, and needs bigger equipment pressure during forging.
Summary of the invention
The first object of the present invention is to provide a kind of forging mold, forges solving deep tube type forging in prior art
Present in journey, stock utilization is low, metal streamline is cut-off, organization mechanics poor performance, technique are loaded down with trivial details and production efficiency is low etc.
Problem.
For realizing above-mentioned first purpose, the embodiment of the invention discloses a kind of forging mold, including the upper mold being mutually matched
And lower mold, described lower mold has concave downward in the lower mold die cavity of described lower mold end face, and the sidewall withdrawing pattern of described lower mold die cavity is oblique
Degree is 0 ° ~ 3 °, and the recessed fillet of described lower mold cavity bottom is R50mm ~ R100mm；Described mold has concave up sinking on described
The upper model cavity of mould bottom surface and downwardly projecting in the boss of described upper mold bottom surface, the sidewall pattern draft of described upper model cavity is
0.5 ° ~ 3 °, the center position of described upper mold bottom surface is located at by described boss, the dome angle of described boss bottom be R80mm ~
R150mm, the gradient of described boss bottom is 10 ° ~ 15 °；After described upper mold and described lower mold close, described upper model cavity and
Interior shape after described lower mold die cavity combines is identical with the external shape of forging.
In conjunction with such scheme, in the implementation that the first is possible, the sidewall pattern draft of described lower mold die cavity is 0 ° ~
1°；The sidewall pattern draft of described upper model cavity is 0.5 ° ~ 1 °.
In conjunction with such scheme, in the implementation that the second is possible, described lower mold is provided with lower knock-pin, and described upper mold sets
Upper knock-pin, described lower knock-pin and described upper knock-pin is had to be used for the forging of forging molding from described upper mold and described lower mold
In eject.
In conjunction with any one in the implementation that the second of such scheme to such scheme is possible, may at the third
Implementation in, after described upper mold and described lower mold close, the bottom surface of described upper mold contacts with the end face of described lower mold
Forming die joint, the degree of depth of described upper model cavity is set to 50 ~ 150mm higher than described die joint.
The second object of the present invention is to provide a kind of forging method based on described forging mold.
For realizing above-mentioned second purpose, the embodiment of the invention discloses a kind of forging method, described forging method includes:
Carry out changing forging by bar, prepare blank；
Described blank is carried out the round as a ball process of jumping-up, prepares biscuit；
Described biscuit is processed periphery process, the biscuit after preparation processing；
Biscuit after described processing is placed in forging mold and carries out conducting forging processing, manufacture forging.
In conjunction with such scheme, in the implementation that the first is possible, described biscuit after described processing is placed in forging
Mould carries out conducting forging processing, farther includes after manufacturing forging:
By lower knock-pin and upper knock-pin, described forging is ejected from described forging mold.
The forging mold of the present invention has less pattern draft, and the forging surplus produced is little, it is possible to be effectively improved material
The utilization rate of material, the integrity ensureing the metal streamline of forging and the organization mechanics performance of lifting forging, required during forging
Pressure is the least, is effectively shortened the forging cycle of forging.Use the forging method of this forging mold, it is possible to less at pressure
Large deep cylinder swaged forging part is produced conveniently and efficiently on forging equipment.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of the forging that tradition die forging mode of the prior art processes；
The cross-sectional view of the forging mold that Fig. 2 provides for the embodiment of the present invention；
270 ° of cutting structural representations of the forging mold that Fig. 3 provides for the embodiment of the present invention；
The structural representation of the forging that the forging mold that Fig. 4 provides for the embodiment of the present invention processes；
The microscopic structure enlarged drawing on the forging top that the forging mold that Fig. 5 provides for the embodiment of the present invention processes；
Microscopic structure enlarged drawing in the middle part of the forging that the forging mold that Fig. 6 provides for the embodiment of the present invention processes；
The microscopic structure enlarged drawing of the forging bottom that the forging mold that Fig. 7 provides for the embodiment of the present invention processes.
In figure: 1, upper knock-pin, 2, upper mold, 3, lower mold, 4, lower knock-pin, 5, upper model cavity, 6, lower mold die cavity, 7, convex
Platform, 8, die joint；
H, the degree of depth of upper model cavity, d1, the sidewall pattern draft of upper model cavity, d2, the sidewall pattern draft of lower mold die cavity,
R1, the recessed fillet of lower mold cavity bottom, R2, the dome angle of boss bottom, D, the gradient of boss bottom.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
With reference to Fig. 1, the large deep cylinder swaged forging part shown in Fig. 1 is to be processed by tradition die forging mode of the prior art
, shown in the dotted line in Fig. 1 is the roughing part being processed further out by this forging.The streamline of this forging is undesirable, at machine
During adding, metal streamline can be cut off；And the sidewall of this forging all has bigger pattern draft, forging surplus is big, adds man-hour
Stock utilization is low.
With reference to Fig. 2 and Fig. 3, the embodiment of the present invention provides a kind of forging mold, is generally used for adding of large deep cylinder swaged forging part
Work, including the upper mold 2 being mutually matched and lower mold 3, wherein lower mold 3 has concave downward in the lower mold die cavity 6 of lower mold 3 end face, on
Mould 2 has the concave up upper model cavity 5 sinking into upper mold 2 bottom surface and downwardly projecting in the boss 7 of upper mold 2 bottom surface, and boss 7 is located at
The center position of upper mold 2 bottom surface；After upper mold 2 closes with lower mold 3, upper model cavity 5 and lower mold die cavity 6 combine after inside
Shape is identical with the external shape of forging.
The streamline of the forging for making to utilize this forging mold to process is more smooth, and it is less to make the sidewall of forging have
Pattern draft, this has been done further improvement by the forging mold provided in the embodiment of the present invention.At the sidewall arranging lower mold die cavity
During sidewall pattern draft d1 of pattern draft d2 and upper model cavity, it is contemplated that reduce sidewall pattern draft d2 of lower mold die cavity and upper
Sidewall pattern draft d1 of model cavity can make metal under the boss 7 of upper mold 2 extrudes, along lower mold die cavity 6 and upper model cavity 5 up
It is minimized by the frictional resistance of lower mold sidewall and upper mold sidewall during flowing, and the forging so produced has less
Pattern draft, significantly reduces forging surplus, improves stock utilization, also ensure that the integrity of the metal streamline of forging；
But, it is contemplated that it is easy to the forging after molding and splits away off from the boss 7 of upper mold 2 under the effect of less ejecting force, upper mold
Sidewall pattern draft d1 of die cavity can not be less than 0.5 °.Therefore, in the forging mold that the embodiment of the present invention provides, lower mold die cavity
Sidewall pattern draft d2 is set to 0 ° ~ 3 °, and sidewall pattern draft d1 of upper model cavity is set to 0.5 ° ~ 3 °.Especially, model cavity instantly
Sidewall pattern draft d2 be set to 0 ° ~ 1 °, when sidewall pattern draft d1 of upper model cavity is set to 0.5 ° ~ 1 °, better.
In the recessed fillet R1 that lower mold cavity bottom is set and upper mold 2 during the dome angle R2 of boss bottom, it is contemplated that lower mold
When the recessed fillet R1 of cavity bottom and the dome angle R2 of boss bottom is less, metal flows in lower mold die cavity 6 and upper model cavity 5
Obstructed, the pressure needed for forging can increase, and metal surface also there will be the forging defects such as tear；But, it is contemplated that drag
When recessed fillet R1 bottom chamber and the dome angle R2 of boss bottom is bigger, surplus outside forging can be made at this to reduce, inner side
Surplus is excessive, causes post-production part the most difficult.Therefore, in the forging mold that the embodiment of the present invention provides, lower mold die cavity
The recessed fillet R1 of bottom is set to R50mm ~ R100mm, and the dome angle R2 of boss bottom is R80mm ~ R150mm.
In upper mold 2 is set during gradient D of boss bottom, it is contemplated that when bigger gradient can make forging metal successfully from
The bottom of boss 7 is flowed out, and reduces forging desirable pressure, but gradient can make again forging surplus herein increase too greatly, material use
Rate is the highest.Therefore, in the forging mold that the embodiment of the present invention provides, in upper mold 2, gradient D of boss bottom is 10 ° ~ 15 °.
After upper mold 2 closes with lower mold 3, the bottom surface of upper mold 2 contacts with the end face of lower mold 3 and forms a die joint 8, on
Degree of depth h of model cavity is set to 50 ~ 150mm higher than this die joint 8.Along with the carrying out of forging process, owing to existing on upper mold sidewall
Pattern draft more than zero, can make metal be subject to component outward to have turned-out trend；In forging process, it is positioned at drag
The metal being squeezed in chamber 6, before crossing this die joint 8, is retrained by lower mold sidewall, can be straightly along lower mold sidewall
Up flow, but outwards can translate into horn-like after metal crosses this die joint 8 in the free space that die joint 8 is formed.Position
The existence of the upper model cavity 5 of the channel-shaped above die joint 8 seeks to ensure along with the carrying out of forging process, makes metal enter this
It is restricted after model cavity 5 in channel-shaped, metal can be made to recover when degree of depth h of upper model cavity is than this die joint 8 high 50 ~ 150mm
Straight-tube shape, thus ensure that forging has good molding effect.
Additionally, lower mold 3 is provided with lower knock-pin 4, upper mold 2 is provided with knock-pin 1, and lower knock-pin 4 arranges five, upper knock-pin
1 arranges one, and lower knock-pin 4 and upper knock-pin 1 are for ejecting the forging of forging molding from upper mold 2 and lower mold 3.
Further, the embodiment of the present invention provides a kind of forging method based on above-mentioned forging mold, this forging the most simultaneously
Method includes:
S1, carry out changing forging by bar, prepare blank.
In this step, by carrying out changing forging by the bar of specification blanking, so can refine the crystal grain of bar, raising is prepared
Blank structural homogenity and flaw detection level.
S2, blank is carried out the round as a ball process of jumping-up, prepare biscuit.
In this step, first use resistance furnace preheating, when furnace temperature reaches desired temperature, blank put in resistance furnace and heat,
It is incubated a period of time when furnace temperature goes back up to desired temperature, then the blank heated is quickly moved out resistance furnace, in quick forging machine
On this blank is carried out repeatedly upsetting pull, the deflection of blank need to be controlled during each upsetting pull, finally this blank is processed into biscuit.
S3, biscuit is processed periphery process, preparation processing after biscuit.
In this step, this biscuit is processed periphery and processes, including top and bottom and the side of biscuit, so that biscuit
Diameter less than the internal diameter of lower mold die cavity in above-mentioned forging mold, the diameter 5mm less than the internal diameter of lower mold die cavity of general control biscuit,
Need to detect a flaw from the direction, top and bottom of the biscuit after processing simultaneously.The diameter of biscuit is so accurately controlled, purpose
Can put into smoothly in lower mold die cavity after being the heating of the biscuit after ensureing processing, and ensure the gap of biscuit and lower mold die cavity
The least, during to prevent forging, biscuit bias causes the forging upper end level of final forging molding inconsistent.
S4, the biscuit after processing is placed in forging mold and carries out conducting forging processing, manufacture forging.
In this step, first use resistance furnace preheating, when furnace temperature reaches desired temperature, the biscuit after processing is put into resistance
Heating in stove, be incubated a period of time when furnace temperature goes back up to desired temperature, the biscuit after the processing that then will heat quickly moves
Go out in the above-mentioned forging mold after resistance furnace is placed on preheating, stamp forging hydraulic press carries out one to two to the biscuit after this processing
Fire time forging molding.Additionally, the biscuit after Jia Gong should spray protecting lubricant Ti6 before putting into resistance furnace, forging mold uses water
Base graphite lubrication.
S5, by lower knock-pin and upper knock-pin, forging is ejected from forging mold.
In this step, after whole forging process completes, open lower knock-pin 4, forging is ejected from lower mold die cavity 6, when
When forging is relatively big or structure is more complicated, need to open upper knock-pin 1.
As a example by the concrete large deep cylinder swaged forging part making TC4 titanium alloy material, first use the TC4 titanium alloy of φ 400mm
Bar, is intercepted the bar of 1345mm by technique, turns two-phase section change forging by carrying out α just+β by the bar after specification blanking, prepare base
Material.It is then used by resistance furnace preheating, when furnace temperature reaches TβWhen-35 DEG C, blank is put in resistance furnace and heat, wherein TβFor this TC4
The transformation temperature of titanium alloy.When furnace temperature goes back up to T againβIt is incubated 340 minutes when-35 DEG C, then the blank heated quickly is moved
Go out resistance furnace, 31.5MN quick forging machine carries out 9 upsetting pulls to this blank by the pattern of a fire time upsetting pull, needs during each upsetting pull
This blank, between 40% ~ 50%, is finally processed into the biscuit of φ 850 × 275mm by the deflection of control blank.
This biscuit is processed periphery process, including top and bottom and the side of biscuit, so that under the diameter ratio of biscuit
The little 5mm of internal diameter of model cavity, need to detect a flaw from the direction, top and bottom of the biscuit after processing simultaneously.Then resistance furnace is reused
Preheating, when furnace temperature reaches TβWhen-35 DEG C, the biscuit after processing is put in resistance furnace and heat, when furnace temperature goes back up to TβProtect when-35 DEG C
Temperature 220 minutes, the biscuit after the processing that then will heat is quickly moved out in the forging mold after resistance furnace is placed on preheating, forging
Making mold preheating temperature is 250 ~ 350 DEG C.In this forging mold, sidewall pattern draft d2 of lower mold die cavity is 0 °, lower mold die cavity
The recessed fillet R1 of bottom is R50mm, and sidewall pattern draft d1 of upper model cavity is 0.5 °, and the dome angle R2 of boss bottom is
R80mm, gradient D of boss bottom is 12 °, and it is 150mm that degree of depth h of upper model cavity exceeds the height of die joint 8.At die forging hydraulic pressure
On machine, the biscuit after this processing is carried out 1 fire time forging molding.Additionally, the biscuit after Jia Gong should spray protection before putting into resistance furnace
Lubricant Ti6, forging mold uses water-based graphite lubrication.
After whole forging process completes, open lower knock-pin 4, forging ejected from lower mold die cavity 6, when forging is relatively big or
When structure is more complicated, need to open upper knock-pin 1.Generally, forging also needs to carry out further heat treatment, is generally divided into
Homogenization and two processes of annealing, when wherein Homogenization Process is particularly as follows: heating furnace is warmed up to 980 DEG C ± 6 DEG C, put into forging
Being incubated 150 minutes in stove, then coming out of the stove to put in water cools down；Annealing process is particularly as follows: heating furnace is warmed up to 700 DEG C ± 6
DEG C time, forging is put in stove be incubated 240 minutes, natural cooling in atmosphere of then coming out of the stove.
With reference to Fig. 4, the large deep cylinder swaged forging part of the TC4 titanium alloy material shown in Fig. 4 is for utilizing the embodiment of the present invention to carry
The forging mold of confession, and the aforementioned concrete forging method that utilizes the embodiment of the present invention to provide processes, shown in the dotted line in Fig. 4
For the roughing part that is processed further out by this forging.This forging has the advantage that the streamline of (1) forging is good, can prevent
Only during machine adds, metal streamline is cut off；(2) the sidewall pattern draft of forging is less, and forging surplus is little, adds material in man-hour
Utilization rate is high, has simplified the punching operation in traditional die forging mode simultaneously；(3) forging pressure required during forging process subtracts significantly
Little, it is achieved on the forging equipment that pressure is less, to produce large deep cylinder swaged forging part conveniently and efficiently, as utilized the present invention to implement
Forging pressure needed for the forging that the forging mold that example provides processes is 130MN, and uses tradition of the prior art die forging
Forging pressure needed for the forging of the same size that mode processes is 350MN；(4) forging deflection when die forging significantly carries
Height, significantly improves the ultrasonic examination level of forging and organization mechanics performance and uniformity thereof, and the ultrasonic examination of forging reaches
Arrive φ 0.8-12dB；(5) manufacturing process of forging is greatly simplified, and the fire time when forging is become by more than three former fire time
Type has been reduced to a pyrogene type, significantly shorten the production cycle.
With reference to Fig. 5, Fig. 6 and Fig. 7, Fig. 5, Fig. 6 and Fig. 7 are respectively the aobvious of the forging upper, middle and lower shown in Fig. 4
Micro-assembly robot enlarged drawing, amplification is 500 times.It can be seen that the tissue at each position of forging is β changes tissue matrix
On a certain amount of isometry primary alpha phase is distributed, the content of primary alpha phase, all about 30%, for more satisfactory microscopic structure, has
Preferably structural homogenity.
Table 1 below respectively illustrates the forging shown in Fig. 4, and utilizes open die forging mode and tradition die forging in prior art
The stock utilization of the forging of the same size that mode processes.
Table 1
Table 2 below shows the tensile mechanical properties at a room temperature and a high temperature of the forging shown in Fig. 4.
Table 2
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (5)
1. a forging mold, including the upper die and lower die being mutually matched, it is characterised in that described lower mold have concave downward in
The lower mold die cavity of described lower mold end face, the sidewall pattern draft of described lower mold die cavity is 0 °～3 °, described lower mold cavity bottom
Recessed fillet is R50mm～R100mm；Described mold has the concave up upper model cavity sinking into described upper mold bottom surface and the most convex
For the boss of described upper mold bottom surface, the sidewall pattern draft of described upper model cavity is 0.5 °～3 °, and described boss is located at described
The center position of upper mold bottom surface, the dome angle of described boss bottom is R80mm～R150mm, and the gradient of described boss bottom is
10 °～15 °；After described upper mold and described lower mold close, described upper model cavity and described lower mold die cavity combine after inside
Shape is identical with the external shape of forging；After described upper mold closes with described lower mold, the bottom surface of described upper mold and described lower mold
End face contact formation die joint, the degree of depth of described upper model cavity is set to higher than described die joint 50～150mm.
Forging mold the most according to claim 1, it is characterised in that the sidewall pattern draft of described lower mold die cavity be 0 °～
1°；The sidewall pattern draft of described upper model cavity is 0.5 °～1 °.
Forging mold the most according to claim 1, it is characterised in that described lower mold is provided with lower knock-pin, described upper mold sets
Upper knock-pin, described lower knock-pin and described upper knock-pin is had to be used for the forging of forging molding from described upper mold and described lower mold
In eject.
4. a forging method based on forging mold described in claim 1, it is characterised in that described forging method includes:
Carry out changing forging by bar, prepare blank；
Described blank is carried out the round as a ball process of jumping-up, prepares biscuit；
Described biscuit is processed periphery process, the biscuit after preparation processing；
Biscuit after described processing is placed in forging mold and carries out conducting forging processing, manufacture forging.
5. according to the forging method described in claim 4, it is characterised in that described biscuit after described processing is placed in forging
Mould carries out conducting forging processing, farther includes after manufacturing forging:
By lower knock-pin and upper knock-pin, described forging is ejected from described forging mold.
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| CN108526365B (en) * | 2018-05-30 | 2020-12-18 | 西安三角防务股份有限公司 | Forging forming method of large titanium alloy central part |
| CN109093048B (en) * | 2018-08-01 | 2020-11-13 | 西安三角防务股份有限公司 | Large-scale machine brake type forging die and forging method |
| CN109093049A (en) * | 2018-08-01 | 2018-12-28 | 西安三角防务股份有限公司 | A kind of forging mold and forging method |
| CN112676505B (en) * | 2020-11-20 | 2023-06-09 | 沈阳中钛装备制造有限公司 | Forging forming method |
| CN112958736A (en) * | 2021-02-01 | 2021-06-15 | 沈阳中钛装备制造有限公司 | Forming method of die forging and die tool |
| CN112756538B (en) * | 2021-02-26 | 2024-05-07 | 辽宁北祥重工机械制造有限公司 | Near-net forming die and forming method for hinge beam forging of fine steel stone pressure equipment |
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| CN2418978Y (en) * | 2000-01-24 | 2001-02-14 | 王秀清 | Liquid pressing mould for flywheel cover for gear chamber of multi-cylinder diesel engine |
| US6688154B2 (en) * | 2001-07-19 | 2004-02-10 | Showa Denko Kabushiki Kaisha | Die for forging rotor, forge production system and forging method using the die, and rotor |
| CN101693279B (en) * | 2009-10-20 | 2012-05-02 | 西安西工大超晶科技发展有限责任公司 | Upsetting and extruding precision die-forging forming method for large titanium alloy deep tube parts |
| CN201735623U (en) * | 2010-07-13 | 2011-02-09 | 万向钱潮股份有限公司 | Hot extrusion outer ring die being not closed completely |
| CN202239441U (en) * | 2011-10-24 | 2012-05-30 | 哈尔滨中飞新技术股份有限公司 | Forging die for isothermal finish die forging |
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| CN104624906A (en) | 2015-05-20 |
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